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本文研究了不同温度对针叶小爪螨Ｏｌｉｇｏｎｙｃｈｕｓｕｎｕｎｇｕｉｓ（Ｊａｃｏｂｉ）的卵和幼螨至成螨的影响。结果表明：滞育卵在０℃、５℃、１０℃（ＲＨ６０％～７０％）条件下，分别经１２０、１００、１００ｄ可解除滞育，其孵化率一般在４０％～６０％之间，自然解除滞育的孵化的率达８０％左右，２５℃为该螨的适温。成螨寿命随温度增高而缩短。在２２～２７．５℃的范围内，平均单雌产卵量为４０～４５粒。越冬卵和夏卵的发育起点（Ｃ）分别为５．３℃和１１．３℃，有效积温（Ｋ）分别为２７１．０日度和８７．７日度。幼螨至成螨的Ｃ为８．８℃，Ｋ为９８．２日度。根据有效积温预测该螨在山东泰字地区一年可完成１１代左右
In this paper, the effects of different temperatures on eggs and young mites to adult mite Oligonychusununguis (Jacobi) were studied. The results showed that diapause eggs could release diapause at 120, 100, 100d respectively at 0 ℃, 5 ℃ and 10 ℃ (RH60% ~ 70%), and their hatching rates were generally between 40% and 60% The natural hatching rate of diapause up to 80%, 25 ℃ for the mite’s temperature. Mite life expectancy shortened with increasing temperature. In the range of 22 ~ 27.5 ℃, the average number of eggs laid per female is 40 ~ 45. The starting points (C) of overwintering and summer eggs were 5.3 ℃ and 11.3 ℃ respectively, and the effective accumulated temperatures (K) were 271.0 and 87.7 days respectively. 2%. The young mites to adult mites C is 8.8 ℃, K is 98.2 days. According to the effective accumulated temperature prediction, the mite can complete about 11 generations a year in Shandong Thai area